Longhorn Solar Rolls Out Free 10-Minute Solar Rooftop Reviews and $0.50-per-Watt Bonus Solar Rebate for Attendees at the Austin Home & Garden Show, Austin Convention Center March 2-4, 2012 AUSTIN, TX--(Marketwire - Mar 1, 2012) - Want to learn how much solar can save on future electric bills? Stop by Longhorn Solar's (www.longhornsolar.com) Austin Home & Garden Booth #223 this...